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Alika [10]
2 years ago
10

9α – 8α Can someone please answer this question ty

Mathematics
1 answer:
Andrei [34K]2 years ago
5 0
1a (you don’t necessarily need to include the 1, so you can just put “a” if you’d like).
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Lily drove 354 miles in 6 hours. On average, how fast did she drive in hours per mile?
vagabundo [1.1K]

Answer: \dfrac{1}{59}\ \text{hours per mile}

Step-by-step explanation:

Given : Distance traveled by Lily= 354 miles

Time= 6 hours

Then,

\text{LIly's rate in hours per mile}=\dfrac{6\text{ hours}}{354\text{ mile}}\\\\=\dfrac{1}{59}\ \text{hours per mile}

Hence, the required speed of Lily = \dfrac{1}{59}\ \text{hours per mile}

3 0
3 years ago
A certain triangle has two 45° angles. What type of triangle is it?
neonofarm [45]
Answer is a right triangle. The angles of a triangle must add to 180 degrees.
You have two 45 degree angles
45 + 45= 90
Now you need 1 more angle to equal 180
180- 90= 90
A right angle is 90 degrees. A right triangle has one right angle and two acute.
3 0
4 years ago
Match each graph below with the correct solution or correct number of solutions to the system of equations. (0,-5) (-1,2) no rea
garik1379 [7]

1. infinitely many solutions

2. (-1,2)

3. No real solutions

<h3><u>Please mark brainly if I'm correct.</u></h3>

3 0
3 years ago
An engineer is planning a new water pipe installation. The circular pipe has a diameter of d=20\text{ cm}d=20 cmd, equals, 20, s
aivan3 [116]

Answer: The answer is 314.28 cm² (approx.).


Step-by-step explanation:  Given that an engineer is going to install a new water pipe. The diameter of this circular pipe is, d = 20 cm.

We need to find the area 'A' of the circular cross-section of the pipe.

Given, diameter of the circular section is

\textup{d}=20~\textup{cm}.

So, the radius of the circular cross-section will be

\textup{r}=\dfrac{\textup{d}}{2}=\dfrac{20}{2}=10~\textup{cm}.

Therefore, cross-sectional area of the pipe is

\textup{A}=\pi \textup{r}^2=\dfrac{22}{7}(10)^2=\dfrac{2200}{7}=314\dfrac{2}{7}=314.28~.~.~.~\textup{cm}^2.

Thus, the answer is 314.28 cm² (approx.).

4 0
4 years ago
How much interest was earned on $108,310 for 120 months if it was invested at a 4.5% simple interest
zvonat [6]

Answer:

$48,739.50

Step-by-step explanation:

You are going to want to use the simple interest formula for this.

I = Prt

<em>P = principal amount </em>

<em>r = interest rate (decimal form) </em>

<em>t = time  (years)</em>

<em />

First convert 4.5% into its decimal form:

4.5% -> \frac{4.5}{100} -> 0.045

Next, we need to change 120 months into years:

\frac{120}{12} =10

<em>(10 years)</em>

<em />

Now, plug in the values into the equation:

I=108,310(0.045)(10)

I=48,739.50

The interest earned after 120 months was $48,739.50

8 0
3 years ago
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